Fabric-holding means for overedge sewing-machines.



Patented Mar. 26, 1918.

R: LOEB. FABRIC HOLDINGl MEANS FOR OVEREDGE SEWING'MACHNES- APPLICATION FILED SEFSU. 1916.

R. LOEB.

FABRIC HOLDING MEANS FOR OVEREDGE SEWING MACHINES.

, APPLlcATIoN FILED senso, Isls.

Patented Mar. 26, 1918.

4 SHEETS-SHEET 2.

II. LoEB. I FABRIC HULDING MEANS FOR OVEHEDGE SEWING MACHINES.

' APPLICATION FILED SWL-30. I9I6. 1,260,923.' PaIenIeIIMar. 26, 1918 4 SHEETS-SHEET 3.

" R. Lois. FABRIC HOLDING MEANS FOB OVEREDGE SEWING MACHINES.

APPLICATIONHLED SEPT 30,- |916.

Patented Mar. 26

4 SHEETS-SHEET 4f ing the subject of `my Patent No. 1,162,498,

fnnrrn :aUnorr Lone, orJENKIN'roWN, PENNSYLVAMA.

mismo-nomine .MEANS Fon ovnnnner:` snwInG-Macnruns.

To all whom t may concemf nBe it known that I, RUDOLF zen of the United States, anda resident Aof Jenkintown, Montgomery` county, Penn- Sylvania, 1Vhave invented certain Improvements in Fabric-Holding Means for 1.Overedge Sewing-Machines, of whichf the follow-` ing is a specification..V f

My invention relates to sewing machines of the overedge or overlook stitch ,typersu'chf for instance as the. structure illustrated in myapplication for patent filed March 25,` 1915, ASerial No. 162,899; and the Aobject of my present invention is `to equipaumachine of this character with means-whereby circular vsections of fabric may have the ornajmental overedge'or overlook stitching Aformdated November 80, 1915, applied `tothe edgeA of the same, which sections-of fabric,

under theoperation of such machine, are

maintained trulycircular. t y Y.

The stitching operation referred to is identical lorsubstantially so with the operation proposed t0 be carried out by use of the structure of my pending application and disclosed in myprior patent before referred to, but the stitches are applied ata point radially disposedwith resPQQt-to thejaxis of a circularpiece of fabric.whichisrotated during the stitching" operation 'so that the ornamental stitched` edge `applied to the same will be truly circular. y y y These and other'features ofmyinvention are more fully Adescribed hereinafter, reference being had to the accompanying draW- ings` in which: i

Figure 1, is ajplan viewofV-theimproved machinehaving the equipment forming the subject of my present invention.` i

.Fig 2is a front-elevationV of the same. l. "Fig; 3is an-end elevation, u f y y p. p.

Fig. 4, is a sectional `View on the line IV-l-V, Fig. 11,-, and 11W. Fig. 5, is a view illustrating-a. `circular piece of-fabricwith its edge-lprovidedfwith ornamental stitches.` l V l The purpose "anl functionof my f present invention is to, apply the ,stitchesfmade in accordance, with the" arrangement' ,ofthje structure `shovtngin .pending application, which l.stitches increase-fand, decrease jin 4length in regularordemmm increase and decrease being carried onautomatically and e.fintinuously` .whereby a; sceller@ :.zledge iis Specification of Letters Patent.

Patented Mar. 2e, 1era.

Application tiled September 30, 1916. Seria1\No.`123,078.

formed ofwhat may betermed overedge or `overlook stitches, to the edge of a circular piece of fabric, `and so that such" embroidered or stitched edge will be truly circular. e As in the" machine of my pending` application before,` referred to, l provide a movable wedge-shaped member l over which the `short and long stitches constituting the improved embroidered edge are formed, which `member is moved at regular intervals with respect tothe point at which the stitches are laid, with-the result that short stitches will be .formed over the point of the member `when moved in one direction; such stitches gradually lengthening to' the full sized stitches formed over the main body or heel of such stitch member and gradually short-` ening as the stitch member is moved in the oppositedirection. rl`he tapered or pointed member 1 over 'which the stitches are formed is reciprocated back and forth with respect to the point at which the stitches are laid, as set forth Jin said pending application, but as my present invention relates to means for taking care of thecircular piece of fabric so that such stitches may be applied to the edge of the same as it is rotated; description of the `operation of such stitching means is not thought tobe necessary. a

Thisstitching operation is identical with that proposed in my pending application and formingthesubject of my pripr patent,

` dicated at 12, to receive a rotatable plagtel;

central ballforming a `bearing forA the plateplate 13 being indicatedA at 1li, and said plate `13 is recessedatl'adjacent its outer edge for thereception" of a friction producing ringl ofrubber` or equivalent material.

The circular piece of cloth to be stitched islaidontop of thetablelO over its rotal tablefeentral section or plate 13A and held byf a clamping or pressure disk `17 under the tenefmfe Y.entire l8- The disk 17de eari and the object ofmy present invention is to movable plate 13.

in a bearing' formed by an'uppenplate'lE having a downwardly depend1ng stem 22 i which passesthrough'ithe Vplate 19 ofthe spider suppollfor .the clamping p disk and through a ring 23 below the saine; the parts so assembled being connected-together by Pa' nut 24;. By preference, balls 25 are interposed between the platel) and`tl1e'plate21 and ring 23 soas to'facilita'te movement of the clamping disk and its spiderfraine with respect to its support.

The plate 21 isprov'ided with fan up? wardly extending hollow stem 26 'receiving the spring 18, and this stem ig vertically movable in the hub 2T' of a bracket 28 suitably secured to the bed-plate of the machine; The' spring is confined in the socket ofthe stem 26 by an arm 29, Which may be'secured to the bracket by afscreWBO. To raise the pressure disk 17 against the tension of the spring v18, a suitable lever 31 is'provided, pivoted to the bracket at 32 and adapted' to engage a pin 33 on the stem 26; the hub 27 being slotted'at 3a to permit movement of said pin.

In operation, the attendant raises the clamping disk 17, slips a section of material inplace, guiding it by hand until'it is ycentered With respect to the axis of the plate 13 rotatable in the table, and then 'drops -the clamping diskl into engagementivith lsaid The stitching operation isthen commenced, and the normal feed of the fabric which acconipaniessuch stitching operation effects rotation of the fabric hold-` ing means and fabric, and the stitchingop'- eration'proceeds until the entire edge of the circular section of fabric has been covered with theorna'mental stitches. WVhen one section'is finished, the clamping disk i's relasedand afresh section'is'put in place;`

lThe tablev receiving the circular section of material may be of any convenient size', and for',operating upon different sized sections of material, the only thing necessary is to provide the axis of rotation of thejplate 18 Vand pressure disk 17 atY a properdistance from the point Where the stitching perati'on takes place with reference to the'sze of the circular pieces of material.

While l have referred to'the formation' of a Special type of ornamental stitch at the edge of the circularpiece of fabric, it Will be understood that my improved means for effecting the stitching of the edges of circular pieces of fabric may be applied to other ,forms of overeclaging' machines.`

raam: .y 11,111 a' sewing machine, the -combina` tion With sftitchforming mechanism nd'-: falnic'-A fe'dingmechanism, ofi-af table',` a''rotatabfe member mennted-in said' table at-one'sild ofthe stitch-forming mechanism, said rotatable member being adapted to receive a circular section. `of Vfabric disposed With its edgeini'position" to ',be"en`gaged by the stitchformin-g mechanism, andmeans for clampwith stitch-forming mechanisn'rfand fabric-l feeding mechanism, of `a table, af rotatable member mounted in said table at On'e'side'of the Stitch-forming mechanism, said rotatable memberbeing'adapted to receive a circular section ofhfabric disposed with itsedge in position to be engaged 'bythe stitch-feria ingmechanism, arotatable clamping member axially mountedf over' sa'idrotatable member, Vand means for lovveringsaid clamping member to' hold thefabric to the-rotatable member; said fabric-being moved with the rotatable'fmember by the engagement of said fabric-feeding mechanism with the fabricduring the formation of thestitches;

3:*In` a sewing machine, the combination with stitch-forming' -mechanismand fabricfefeding mechanism, ofl a table ca-rriedby the bed-plate of the machine, a circular member rotatably'inonntedin said table at one side of the stitch-fo`rming mechanism; said table'being recessed to receive said circular member and the latter being Aadapted to receive a' circular' section of fabric dis; posed with its edgeA in position to be'- en` gaged by" said stitch-formingl`mechanism, and means for clamping said fabric to the rotatableinember; `said fabricL beingl moved With'the rotatable member by the engagement ofsaid fabric-feeding-mechanism with the fabric during the formation of the stitches. y

4L In a` Sewing'maehine,the combination With' stitchefor'ming me''chanism and fabric-- feeding mechanism, ofa table' carriedfbyfthe bedeplate vof the machine, a circular member rotatably monntedin saidf table at one side ofthe -stiteh-fo'rnfiing mechanism; i said table being recessedto receive said circular"meinu ber and the latter? being adapted to receive a circular section offabric'disposed` Witnits edge in positionto be engaged by said stichformmg mechanism, a rotatable clamping member axially mountedgover said rotatable member, means forV lowering said clamping member to hold the fabric to the rotatable member, and means for' raising and holding said clampingmemb'er in the elevated position said `fabricl being moved With' the rota'-v table member' by the engagement oil said fabric-"feeding 4ineclifanisin Witlthe fabric j dringtheformatio- 'ofthe stitches. 4 En assainir: ma' 'ne',-the combina ien withl stitch yferm-ing mecha-nient and fabricfeeding mechanism, of an extension table carried by the bed-plate of the machine, a circular plate rotatably mounted in said table, a central bearing for said plate, the latter having friction material in its upper surface, a rotatable clamping member disposed axially With respect to said rotatable plate, means for holding said clamping plate in engagement with a section of fabric overlying the friction material of the rotatable plate,`an antifriction bearing for said clamping plate, and means for lifting said clamping plate and holding the same in the ele` vated position; the rotatable plate and clamping plate holding the fabric thereto moving automatically vvith the `fabric as sitches areapplied to the edge of the latter.-

6. In a sewing machine, the combination with stitch forming mechanism andfabricfeeding mechanism, of an extension table l carried. by the bed-plate ofthe machine, a

circular plate rotatably mounted in said table, a central `bearing for said plate, the latter havingv friction material in its upper surface, a rotatable clamping member disposed axiallyvvith respect, to said rotatable plate, means for holding said clamping plate in engagement with a section of fabric overlying the friction material of the rotatable plate and positioned to be engaged by said stitch-forming mechanism, a ball bearing mount for said clamping plate, and means for lifting saidclamping plate; the rotatable plate and clamping plate moving automatiter 'is stitched.

7. In a sewing machine, the combination with Stitch forming mechanism and'fabricfeeding mechanism, of an extension table carried by the bed-plate of the machine, a circular plate rotatably mounted in said table, a central ball support for said plate, said plate having friction material annularly; disposed in its upper surface, a rotatable cally with the fabric as the edge of the latclamping member disposed'aXially With respect to said rotatable plate, a bracket for supporting said clamping member, means for holding. said clamping plate in engagement with the friction material of the rotatable plate, and a .lever carried by the" bracket forlifting said clamping plate; the

Cogles of this patent may be obtained for the ffabric during the carried by the bed-plate of the machine, a .circular plate rotatably mounted in said table, a central ball support for said plate, said plate having friction material annularly disposed in itsV upper surface and adapted to receive a circular section of fabric With its edge in position to be engaged by the stitch forming mechanism, a rotatable clamping member disposed axially with respect to said rotatable plate to hold the fabric in place, a bracket for supporting said clamping member, a spring for holding said clamping plate in engagement with a section of fabric overlying` the friction material of the rotatable plate, and a lever carried by the bracket for lifting said clamping plate; therotatable plate and clamping plate moving automatically with the fabric as the edge of the latter is stitched.

9. In a sewing machine, the combination with stitch-forming mechanism and fabricfeeding mechanism, of a rotatable clamping means located at Vone side of such stitchforming mechanism for holding a circular section of fabric disposed with its edge in position to be engaged by said Stitch-forming mechanism; said fabric being moved with said rotatable holding means by the engagement of'said fabric-feedin mechanism With ormation of the stitches.

l0. In a sewing machine, the combination with stitch-forming mechanism and fabricfeeding mechanism, of a table carried by the bed-plate of the machine and located at one side'of the Stitch-forming mechanism, and

rotatable clamping means disposed above said table for holding a circular section of fabric disposed With its edgeiin position to be engaged by said stitch-forming mechanism; said fabric being moved with the rotatable clamping means by the engagement of said fabric-feeding mechanism with the fabric during the formation of the stitches.

' RUDOLF LOEB.

ve cents each, by addressing the Commissioner of Patents,

Washington, ILC. 

